单项选择题
A. Enable WPF tracing in the registry.Restart the application.
B. Enable tracing by modifying local Group Policy.Restart the application.
C. Open the XML configuration file for your application on the user's computer.Set tracing to a verbose level.Restart the application.
D. Open the XML configuration file for your application on the user's computer.Add a trace listener.Restart the application.
单项选择题 You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You write the following code fragment to bind a customer object to several controls in a window. You need to identify the source of the error. What should you do?（）
单项选择题 You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. The application uses data-bound controls. You discover that when the application is executed by users, one of the controls is not displayed properly. You need to view the property values assigned to the controls. What should you do?（）
单项选择题 You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. The application contains a custom control that is used to display customer information. You discover that the custom control is not rendering correctly. You need to identify the WPF element that is causing the issue. You want to achieve this goal by using the minimum amount of administrative effort. What should you do?（）